Lab Equipment for Teaching Physics

Features

• Direct digital reading

• High sensitivity and repeatability

• Ideal for fluid mechanics teaching

  
  

Introduction

The liquid surface tension coefficient is a crucial parameter in characterizing the physical properties of liquids. It plays an important role in a variety of industrial, medical, and scientific applications. Traditional methods for measuring surface tension, such as using a Jolly scale or torsion balance, often face challenges such as imprecision, instability, and lack of direct digital output. The LEMI-30 Apparatus of Measuring Liquid Surface Tension Coefficient overcomes these limitations by employing a modern, precise, and reliable method based on a pulling and breakaway technique using a silicon crystal resistance strain sensor.

Key advantages of the LEMI-30 Apparatus incldue:

1. High Sensitivity and Stability: The silicon crystal strain sensor offers superior sensitivity, linearity, and stability, along with a direct digital voltage output for easy data collection and analysis.

2. Enhanced Durability: Unlike traditional methods that use metal wires or blades, this apparatus utilizes a rigid, durable metal ring or slice, which ensures minimal deformation during the measurement process, leading to more accurate results.

3. Optimized Design: The dimensions of the metal ring are carefully designed and rigorously tested to ensure precise and reliable measurements, providing consistent results across a range of experiments.

Experiments you can perform with LEMI-30:

1. Sensor Calibration: Calibrate the silicon resistance strain sensor, determine its sensitivity, and learn how to perform accurate force sensor calibration for reliable measurements.

2. Surface Tension Observation: Explore and observe the phenomena of liquid surface tension, gaining a deeper understanding of the forces at play.

3. Surface Tension Measurement: Measure the surface tension coefficients of various liquids, including water and other substances, and compare their properties.

4. Liquid Concentration and Surface Tension: Investigate the relationship between liquid concentration and its surface tension coefficient, enhancing your knowledge of liquid behavior under different conditions.

The LEMI-30 Apparatus provides students with a hands-on, modern approach to studying surface tension. Through these experiments, students will:

1. Gain practical experience in calibrating sensors and measuring physical properties of liquids.

2. Develop a deeper understanding of liquid behavior and its real-world applications in industries such as materials science, medical research, and engineering.

3. Learn how to use a digital output sensor to accurately measure and interpret surface tension coefficients in liquids.

The included instruction manual offers clear experimental setups and configurations, step-by-step guidance through each experiment, including tips for troubleshooting and data interpretation, and sample results and data analysis to assist in understanding and validating experiment outcomes.

For additional details about the LEMI-30 Apparatus and its capabilities in studying liquid properties, please refer to Experiment Theory and Contents . This apparatus is an invaluable tool for educational purpose in understanding the fundamental properties of liquids and their behavior in various fields.

Parts and Specifications